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Forward displacement in grasping and visually judging pliers

Identifieur interne : 000E79 ( PascalFrancis/Corpus ); précédent : 000E78; suivant : 000E80

Forward displacement in grasping and visually judging pliers

Auteurs : Anne-Marie Brouwer ; Ian M. Thornton ; Volker H. Franz

Source :

RBID : Pascal:05-0307125

Descripteurs français

English descriptors

Abstract

Observers often tend to misremember the visual stopping point of a movement in the direction of movement (representational momentum). We investigated whether this forward displacement also occurs in grasping. We asked participants to close virtual pliers after the pliers had been opening or closing. The participants' thumbs and index fingers were attached to robot arms which allowed us to provide haptic feedback about the location of the pliers' handles. In a visual task, participants judged the remembered final opening width of the pliers relative to a comparison stimulus. For grasping, we found forward displacement: participants opened their fingers wider if the pliers had been opening compared to when they had been closing. In contrast, we did not find clear forward displacement in the visual task. The effects in grasping and the visual task were not correlated between participants. These results seem to argue against the existence of one form of anticipation that serves both perception and grasping.

Notice en format standard (ISO 2709)

Pour connaître la documentation sur le format Inist Standard.

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A11 01  1    @1 BROUWER (Anne-Marie)
A11 02  1    @1 THORNTON (Ian M.)
A11 03  1    @1 FRANZ (Volker H.)
A14 01      @1 Max Planck Institute for Biological Cybernetics @3 DEU @Z 1 aut. @Z 2 aut. @Z 3 aut.
A14 02      @1 Justus-Liebig-Universitat Giessen @3 DEU @Z 3 aut.
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Format Inist (serveur)

NO : PASCAL 05-0307125 INIST
ET : Forward displacement in grasping and visually judging pliers
AU : BROUWER (Anne-Marie); THORNTON (Ian M.); FRANZ (Volker H.)
AF : Max Planck Institute for Biological Cybernetics/Allemagne (1 aut., 2 aut., 3 aut.); Justus-Liebig-Universitat Giessen/Allemagne (3 aut.)
DT : Publication en série; Niveau analytique
SO : Visual cognition; ISSN 1350-6285; Royaume-Uni; Da. 2005; Vol. 12; No. 5; Pp. 800-816; Bibl. 2 p.1/4
LA : Anglais
EA : Observers often tend to misremember the visual stopping point of a movement in the direction of movement (representational momentum). We investigated whether this forward displacement also occurs in grasping. We asked participants to close virtual pliers after the pliers had been opening or closing. The participants' thumbs and index fingers were attached to robot arms which allowed us to provide haptic feedback about the location of the pliers' handles. In a visual task, participants judged the remembered final opening width of the pliers relative to a comparison stimulus. For grasping, we found forward displacement: participants opened their fingers wider if the pliers had been opening compared to when they had been closing. In contrast, we did not find clear forward displacement in the visual task. The effects in grasping and the visual task were not correlated between participants. These results seem to argue against the existence of one form of anticipation that serves both perception and grasping.
CC : 002A26E03; 002A26D04
FD : Préhension; Motricité; Mouvement corporel; Membre supérieur; Vision; Perception; Cognition; Homme
ED : Gripping; Motricity; Body movement; Upper limb; Vision; Perception; Cognition; Human
SD : Prension; Motricidad; Movimiento corporal; Miembro superior; Visión; Percepción; Cognición; Hombre
LO : INIST-26633.354000138253600050
ID : 05-0307125

Links to Exploration step

Pascal:05-0307125

Le document en format XML

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